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Commit dde0c2e7 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Al Viro
Browse files

fs: add IOCB_SYNC and IOCB_DSYNC 



This will allow us to do per-I/O sync file writes, as required by a lot
of fileservers or storage targets.

XXX: Will need a few additional audits for O_DSYNC

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 716b9bc0

fs/block_dev.c

+1 −1
Original line number Diff line number Diff line
@@ -1662,7 +1662,7 @@ ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from) 
	ret = __generic_file_write_iter(iocb, from);

	if (ret > 0) {

		ssize_t err;

		err = generic_write_sync(file, iocb->ki_pos - ret, ret);

		err = generic_write_sync(iocb, iocb->ki_pos - ret, ret);

		if (err < 0)

			ret = err;

	}

fs/btrfs/file.c

+1 −1
Original line number Diff line number Diff line
@@ -1852,7 +1852,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb, 
	BTRFS_I(inode)->last_sub_trans = root->log_transid;

	spin_unlock(&BTRFS_I(inode)->lock);

	if (num_written > 0) {

		err = generic_write_sync(file, pos, num_written);

		err = generic_write_sync(iocb, pos, num_written);

		if (err < 0)

			num_written = err;

	}

fs/cifs/file.c

+1 −1
Original line number Diff line number Diff line
@@ -2688,7 +2688,7 @@ cifs_writev(struct kiocb *iocb, struct iov_iter *from) 
	inode_unlock(inode);



	if (rc > 0) {

		ssize_t err = generic_write_sync(file, iocb->ki_pos - rc, rc);

		ssize_t err = generic_write_sync(iocb, iocb->ki_pos - rc, rc);

		if (err < 0)

			rc = err;

	}

fs/direct-io.c

+1 −1
Original line number Diff line number Diff line
@@ -268,7 +268,7 @@ static ssize_t dio_complete(struct dio *dio, ssize_t ret, bool is_async) 
		if (dio->rw & WRITE) {

			int err;



			err = generic_write_sync(dio->iocb->ki_filp, offset,

			err = generic_write_sync(dio->iocb, offset,

						 transferred);

			if (err < 0 && ret > 0)

				ret = err;

fs/ext4/file.c

+1 −1
Original line number Diff line number Diff line
@@ -172,7 +172,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) 
	if (ret > 0) {

		ssize_t err;



		err = generic_write_sync(file, iocb->ki_pos - ret, ret);

		err = generic_write_sync(iocb, iocb->ki_pos - ret, ret);

		if (err < 0)

			ret = err;

	}